/*
 * formulacode.css — brand overrides for MkDocs Material to match the
 * main FormulaCode site (formulacode.org).
 *
 * Typography:  Material default (Roboto) for body — Lexend looks too tight
 *              at docs body sizes. Roboto Mono kept for code so it still
 *              matches the main site's monospace.
 * Palette:     Brand red (#dc2418) primary, brand blue (#1e3a8a) accent,
 *              cool slate neutrals — mirrors src/styles/variables.css on www.
 * Light only:  the dark scheme below is just a softer version that respects
 *              the user's system preference; the main site is light-only.
 */

/* ── Fonts (Roboto loaded by Material when theme.font.text is set) ── */
@import url("https://fonts.googleapis.com/css2?family=Roboto+Mono:ital,wght@0,400;0,500;0,700;1,400&display=swap");

:root {
	--md-code-font: "Roboto Mono", ui-monospace, SFMono-Regular, Menlo, Consolas,
		monospace;

	/* Brand identity */
	--fc-red: #dc2418;
	--fc-red-dark: #b21d12;
	--fc-red-soft: #fdecea;
	--fc-blue: #1e3a8a;
	--fc-blue-dark: #162a66;
	--fc-blue-soft: #e8edf9;

	/* Slate neutrals */
	--fc-text: #0f172a;
	--fc-text-muted: #64748b;
	--fc-border: #e2e8f0;
	--fc-bg: #ffffff;
	--fc-bg-soft: #f8fafc;
	--fc-bg-tertiary: #f1f5f9;
}

/* High specificity (combine :root with the scheme attribute) so we win the
 * cascade against Material's default indigo, which it sets at :root. */
:root,
:root[data-md-color-scheme="default"],
[data-md-color-primary="custom"],
[data-md-color-accent="custom"] {
	--md-primary-fg-color: var(--fc-red) !important;
	--md-primary-fg-color--light: var(--fc-red) !important;
	--md-primary-fg-color--dark: var(--fc-red-dark) !important;
	--md-primary-bg-color: #ffffff !important;
	--md-primary-bg-color--light: rgba(255, 255, 255, 0.7) !important;
	--md-accent-fg-color: var(--fc-blue) !important;
	--md-accent-fg-color--transparent: var(--fc-blue-soft) !important;
	--md-accent-bg-color: #ffffff !important;
	--md-accent-bg-color--light: rgba(255, 255, 255, 0.7) !important;

	--md-default-fg-color: var(--fc-text);
	--md-default-fg-color--light: var(--fc-text-muted);
	--md-default-fg-color--lighter: rgba(15, 23, 42, 0.32);
	--md-default-fg-color--lightest: rgba(15, 23, 42, 0.07);

	--md-default-bg-color: var(--fc-bg);
	--md-default-bg-color--light: var(--fc-bg-soft);

	--md-typeset-color: var(--fc-text);
	--md-typeset-a-color: var(--fc-blue);

	--md-code-bg-color: var(--fc-bg-tertiary);
	--md-code-fg-color: var(--fc-text);

	--md-footer-bg-color: var(--fc-text);
	--md-footer-bg-color--dark: #020617;
}

[data-md-color-scheme="slate"] {
	--md-primary-fg-color: var(--fc-red) !important;
	--md-accent-fg-color: #93c5fd !important;
}

/* ── Body typography ── */
.md-typeset {
	font-family: var(--md-text-font);
	font-size: 0.85rem;
	line-height: 1.7;
	letter-spacing: -0.005em;
}

.md-typeset h1,
.md-typeset h2,
.md-typeset h3,
.md-typeset h4,
.md-typeset h5 {
	font-family: var(--md-text-font);
	font-weight: 700;
	letter-spacing: -0.015em;
	color: var(--fc-text);
}

.md-typeset h1 {
	font-size: 2.2rem;
	line-height: 1.2;
	margin: 0 0 1.4rem;
	font-weight: 700;
}

.md-typeset h2 {
	font-size: 1.5rem;
	margin-top: 2.2rem;
	font-weight: 700;
}

.md-typeset h3 {
	font-size: 1.15rem;
	font-weight: 600;
}

.md-typeset h4 {
	font-size: 1rem;
	font-weight: 600;
	color: var(--fc-text-muted);
	text-transform: uppercase;
	letter-spacing: 0.06em;
}

.md-typeset a {
	color: var(--fc-blue);
	text-decoration: none;
	border-bottom: 1px solid transparent;
	transition: border-color 120ms;
}

.md-typeset a:hover {
	border-bottom-color: var(--fc-blue);
	color: var(--fc-blue-dark);
}

.md-typeset code,
.md-typeset pre {
	font-family: var(--md-code-font);
	font-feature-settings: "calt" 0;
}

.md-typeset code {
	font-size: 0.78em;
	padding: 1px 5px;
	background: var(--fc-bg-tertiary);
	border-radius: 4px;
	color: var(--fc-text);
}

.md-typeset pre > code {
	font-size: 0.8rem;
	padding: 0;
	background: transparent;
}

.md-typeset .highlight {
	background: var(--fc-bg-tertiary);
	border: 1px solid var(--fc-border);
	border-radius: 8px;
}

.md-typeset .highlight code {
	background: transparent;
}

.md-typeset blockquote {
	border-left: 3px solid var(--fc-red);
	padding-left: 1rem;
	color: var(--fc-text-muted);
}

/* ── Header (top bar) ── */
.md-header {
	background: var(--fc-bg);
	color: var(--fc-text);
	border-bottom: 1px solid var(--fc-border);
	box-shadow: none;
}

.md-header__title {
	font-family: var(--md-text-font);
	font-weight: 600;
	letter-spacing: -0.015em;
	color: var(--fc-text);
}

.md-header__topic .md-ellipsis,
.md-header__button {
	color: var(--fc-text);
}

.md-header__option [data-md-component="palette"] .md-icon svg {
	fill: var(--fc-text-muted);
}

.md-search__input {
	background: var(--fc-bg-tertiary);
	color: var(--fc-text);
}

.md-search__input::placeholder {
	color: var(--fc-text-muted);
}

/* ── Tabs (top-level navigation) ── */
.md-tabs {
	background: var(--fc-bg);
	color: var(--fc-text);
	border-bottom: 1px solid var(--fc-border);
}

.md-tabs__link {
	color: var(--fc-text-muted);
	font-weight: 500;
	opacity: 1;
	font-size: 0.78rem;
}

.md-tabs__link:hover,
.md-tabs__link--active {
	color: var(--fc-red);
}

/* ── Sidebar nav ── */
.md-nav {
	font-family: var(--md-text-font);
	font-size: 0.78rem;
}

.md-nav__title {
	font-weight: 700;
	color: var(--fc-text);
	letter-spacing: -0.01em;
}

.md-nav__link {
	color: var(--fc-text-muted);
	transition: color 120ms;
}

.md-nav__link:hover,
.md-nav__link--active {
	color: var(--fc-red);
}

/* Active page in sidebar — pill instead of underline. */
.md-nav__item .md-nav__link[aria-current="page"] {
	color: var(--fc-red);
	font-weight: 600;
}

/* ── Buttons ── */
.md-typeset .md-button {
	font-family: var(--md-text-font);
	font-weight: 600;
	letter-spacing: -0.005em;
	padding: 0.5rem 1.1rem;
	border-radius: 8px;
	border-color: var(--fc-border);
	color: var(--fc-text);
	background: var(--fc-bg);
	transition: all 120ms;
}

.md-typeset .md-button:hover {
	border-color: var(--fc-red);
	color: var(--fc-red);
}

.md-typeset .md-button--primary {
	background: var(--fc-red);
	border-color: var(--fc-red);
	color: #fff;
}

.md-typeset .md-button--primary:hover {
	background: var(--fc-red-dark);
	border-color: var(--fc-red-dark);
	color: #fff;
}

/* ── Admonitions ── */
.md-typeset .admonition,
.md-typeset details {
	border-radius: 8px;
	border-width: 1px;
	font-size: 0.85rem;
	box-shadow: none;
}

.md-typeset .admonition-title,
.md-typeset summary {
	font-weight: 600;
}

/* ── Tables ── */
.md-typeset table:not([class]) {
	border: 1px solid var(--fc-border);
	border-radius: 8px;
	overflow: hidden;
	font-size: 0.82rem;
}

.md-typeset table:not([class]) th {
	background: var(--fc-bg-soft);
	font-weight: 700;
	color: var(--fc-text);
	letter-spacing: -0.005em;
}

/* ── Footer ── */
.md-footer {
	background: var(--fc-text);
}

.md-footer-meta {
	background: #020617;
}

/* ── Banner / breadcrumb back to formulacode.org ── */
.md-typeset .fc-back-banner {
	display: flex;
	align-items: center;
	gap: 8px;
	margin: 0 0 1.5rem;
	padding: 0.55rem 0.85rem;
	font-size: 0.78rem;
	color: var(--fc-text-muted);
	background: var(--fc-bg-soft);
	border: 1px solid var(--fc-border);
	border-radius: 6px;
	width: fit-content;
}

.md-typeset .fc-back-banner a {
	font-weight: 600;
	color: var(--fc-red);
	border-bottom: none;
}

.md-typeset .fc-back-banner a:hover {
	color: var(--fc-red-dark);
}